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In present paper, the linear regression, Gaussian process regression and support vector machines regression, k-nearest neighbor algorithm were used to predict the photocatalytic reaction rate constant of rare earth doped TiO2. Then, experiments were used to verify the key factor analysis effectiveness based on stepwise multiple regression and advantages of the key factor analysis based on k-NN regression...
In this work, Ag/TiO2 photo catalyst was prepared by depositing elemental Ag on the surface of TiO2 particle surface. Ag was got by reducing ion Ag+ in the suspension of TiO2 with illumination of UV light. When it was used to degrade ethylene blue (MB) using UV light, Ag/TiO2 gave higher catalytic activity than TiO2. To examine the influence of existing type of catalyst on photo degradation of organic...
To investigate the photocatalytic activity of metal ion doped TiO2 synthesized with sol-gel auto-igniting synthesis (SAS) method, Ag-TiO2 photocatalyst was synthesized with TiCl4 as raw materials, citric acid as combustion agent, ammonium nitrate as assistant. Methylene blue was degraded with synthesized catalyst illuminated by UV light and sun light separately. Results showed that the photocatalytic...
This study focuses on the effects of two flow patterns on photo degradation of organic compounds with TiO2 film immobilized on the inner wall of glazed ceramic tube. Pattern 1 is to pump the solution into the tube from the bottom and overflow from the top. Pattern 2 is to spray the solution on the inner surface and flow from the top to the bottom along the inner wall. Experimental results indicated...
In this work, the TiO2 film was immobilized on the surface of glass and stainless steel tubes by sol-gel method and phenol was photo degraded with the TiO2 film. Compared with stainless steel, the photo catalytic activity of TiO2 film on glass is lower, although the surface of glass is more even. According to the XPS results, appearance of the element Na decreases the photo catalytic activity. Photo...
Digital Video image scaling is a full-fledged technology, and can be found everywhere in our daily life. However, the appearance of HDTV brought some problem between the new display devices and the old video signals. In this paper, a novel method of nonlinear scaling is proposed, aim to overcome the compatibility problem. Different from traditional linear approaches, in which the interpolate points...
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